Search found 11 matches

by Repeekthgil
Mon Feb 05, 2018 7:05 pm UTC
Forum: School
Topic: Dealing with "smart" but lazy teenagers
Replies: 7
Views: 4616

Re: Dealing with "smart" but lazy teenagers

I'm a math teacher, but it's not so much for my students, as for the 12th graders that are on my team in general. In particular a student who won't submit things for his English teacher because he says he's already done them, or something. We can't grade a zero. I think I was just venting when I wro...
by Repeekthgil
Mon Feb 05, 2018 3:46 pm UTC
Forum: School
Topic: Dealing with "smart" but lazy teenagers
Replies: 7
Views: 4616

Dealing with "smart" but lazy teenagers

Hi all, I'm a high school teacher and deal with "smart" but lazy teenagers most days... I'm sure we were all there once, I know I was. I know I've read some not-so-witticisms about "what do you call a smart, lazy person" and something about unemployed being the punchline, but I'm...
by Repeekthgil
Wed Nov 08, 2017 1:49 pm UTC
Forum: Mathematics
Topic: Structure of a Maths Lesson...
Replies: 3
Views: 2028

Re: Structure of a Maths Lesson...

I'm a high school teacher, and my lessons tend to go similarly to yours. I probably don't make my students work enough individually, but that's mostly b/c as soon as they are given any freedom they go very much off task... I just got back from a math teacher conference this weekend and it's energize...
by Repeekthgil
Tue Mar 01, 2016 9:05 pm UTC
Forum: Mathematics
Topic: Help with the Chain Rule
Replies: 21
Views: 3452

Re: Help with the Chain Rule

The chain rule applies for nested functions. I like to think of them as having an inner and out part. I teach my students, in addition to the notation you've written that the chain rule is the following sentence: "the derivative of the outside, with the inside unchanged, times the derivative of...
by Repeekthgil
Wed Oct 28, 2015 4:43 pm UTC
Forum: Mathematics
Topic: Euler totient and powers of 2 minus 1
Replies: 10
Views: 2149

Re: Euler totient and powers of 2 minus 1

That's a neat function.

2^n-1 is related to mersenne primes, which certainly have an interesting GCD's
by Repeekthgil
Thu Mar 19, 2015 11:43 am UTC
Forum: Mathematics
Topic: Pythagorean Triples
Replies: 2
Views: 1377

Re: Pythagorean Triples

Upon a rereading, and your encouragement, I totally get it now. I must have been tired when I first went looking. Your explanation of the curves connecting similar m and n values is what was eluding me. Thanks. Pretty neat.
by Repeekthgil
Tue Mar 17, 2015 11:51 am UTC
Forum: Mathematics
Topic: Pythagorean Triples
Replies: 2
Views: 1377

Pythagorean Triples

I'm a high school math teacher who came to the profession from an economics background who is slowly working through a math major and beyond (complex analysis is next...) I'm probably not allowed to post links yet, but the 4th image on the wikipedia page for Pythagorean Triples blows my mind. http:/...
by Repeekthgil
Tue Mar 25, 2014 9:11 pm UTC
Forum: Mathematics
Topic: linear algebra
Replies: 5
Views: 2591

Re: linear algebra

I took a linear algebra class while I was brute forcing my teaching certificate (yay Econ major!). I loved it. The math was simple, but the relationships were glorious. We didn't do many application problems (yaw, pitch, roll was about it,) but thinking about the applications since then have been gr...
by Repeekthgil
Fri Jun 28, 2013 8:12 pm UTC
Forum: Mathematics
Topic: Clever High School Math Problems
Replies: 31
Views: 12929

Re: Clever High School Math Problems

That's a great one. I'm going to file that away in pack problems.
by Repeekthgil
Mon Jun 17, 2013 12:28 pm UTC
Forum: Mathematics
Topic: Clever High School Math Problems
Replies: 31
Views: 12929

Re: Clever High School Math Problems

Having sex is the answer, right? It might be a little inappropriate for the US market... That first type, the sum of 2 numbers (ages) is this, their product that (though we'd been doing differences, b/c it makes for easier systems) and it still gave some of them troubles. Real world applications, th...
by Repeekthgil
Fri Jun 14, 2013 5:38 pm UTC
Forum: Mathematics
Topic: Clever High School Math Problems
Replies: 31
Views: 12929

Clever High School Math Problems

I teach primarily high school freshman Algebra I and Geometry, maybe Calc next year (fingers crossed) Do any of you remember a favorite problem posed in high school? The sort of problem that stopped you and made you think. My favorite is: A mother and child weigh x, the father and child weigh y, and...

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